Prastowo, E., Pranata Erdiansyah, N. and Arimarsetiowati, R. (2019) “Leaf Mineral Composition of Coffee Infected by a Hemileia vastatrix Fungus in Bondowoso, East Java”, Pelita Perkebunan (a Coffee and Cocoa Research Journal), 35(1), pp. 12-21. doi: 10.22302/iccri.jur.pelitaperkebunan.v35i1.345.